Perhaps you should try some spelling variations:
"improving company performance based." » "improving country performance based.", "improve company performance based.", "improving compliance performance based.", "improving community performance based."
"improving plant performance measures." » "improving port performance measures.", "improving court performance measures.", "improving land performance measures.", "improving place performance measures.", "improved plant performance measures."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("improving plant performance measures.") or ("improving company performance based."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving plant performance measures.") OR ("improving company performance based.")).
• Removing quotes may allow a broader search: (( improving plant performance measures. ) or ( improving company performance based. )).
• Adding a wildcard symbol may retrieve word variants: (("improving plant performance measures.") or ("improving company performance based."))*.